scholarly journals Molecular Epidemiology of Campylobacter jejuni Isolates from Wild-Bird Fecal Material in Children's Playgrounds

2008 ◽  
Vol 75 (3) ◽  
pp. 779-783 ◽  
Author(s):  
Nigel P. French ◽  
Anne Midwinter ◽  
Barbara Holland ◽  
Julie Collins-Emerson ◽  
Rebecca Pattison ◽  
...  
Keyword(s):  
New Zealand ◽  
Campylobacter Jejuni ◽  
Wild Bird ◽  
Wild Birds ◽  
Fecal Material ◽  
Bird Populations ◽  
The United Kingdom ◽  
Garden Birds ◽  
The 19Th Century ◽  
Children Under 5

ABSTRACT In many countries relatively high notification rates of campylobacteriosis are observed in children under 5 years of age. Few studies have considered the role that environmental exposure plays in the epidemiology of these cases. Wild birds inhabit parks and playgrounds and are recognized carriers of Campylobacter, and young children are at greater risk of ingesting infective material due to their frequent hand-mouth contact. We investigated wild-bird fecal contamination in playgrounds in parks in a New Zealand city. A total of 192 samples of fresh and dried fecal material were cultured to determine the presence of Campylobacter spp. Campylobacter jejuni isolates were also characterized by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST), and the profiles obtained were compared with those of human isolates. C. jejuni was isolated from 12.5% of the samples. MLST identified members of clonal complexes ST-45, ST-682, and ST-177; all of these complexes have been recovered from wild birds in Europe. PFGE of ST-45 isolates resulted in profiles indistinguishable from those of isolated obtained from human cases in New Zealand. Members of the ST-177 and ST-682 complexes have been found in starlings (Sturnus vulgaris) in the United Kingdom, and these birds were common in playgrounds investigated in New Zealand in this study. We suggest that feces from wild birds in playgrounds could contribute to the occurrence of campylobacteriosis in preschool children. Further, the C. jejuni isolates obtained in this study belonged to clonal complexes associated with wild-bird populations in the northern hemisphere and could have been introduced into New Zealand in imported wild garden birds in the 19th century.

scholarly journals Avian influenza surveillance in wild birds using sentinel ducks

2020 ◽  
Vol 29 (1) ◽  
pp. 3-8
Author(s):  
Bayarmagnai Davganyam ◽  
Nyamsuren Otgontogtokh ◽  
Baljidmaa Batmunkh ◽  
Davaasuren Nergui ◽  
Ariunaa Tserendorj ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Bird ◽  
Sentinel Surveillance ◽  
Wild Birds ◽  
Influenza Surveillance ◽  
Serum Samples ◽  
Bird Populations ◽  
Bird Habitat ◽  
Insulated Isothermal Pcr ◽  
H5n1 Hpai

We conducted active surveillance for avian influenza virus using sentinel ducks in central region of Mongolia (Khunt lake Saikhan soum, Bulgan province) that major wild bird habitat and outbreak site of H5N1 HPAI in wild birds in Mongolia from 2005 to 2011. Total of 39/104 (37,5%) samples were positive by insulated isothermal PCR (iiPCR) and 42/104 (40,38%) swab samples were positive by real time PCR (qPCR). In addition, AIV antibody detected in 35/104 (33,65%) serum samples tested by AIV NP ELISA kit. These results indicated that sentinel surveillance using domestic birds could be an effective method for avian pathogens including influenza in Mongolia. Enhanced sentinel surveillance in wild bird populations in Mongolia is therefore crucial for the understanding of global AIV transmission and epidemiology. Шувууны томуугийн тандах судалгаанд туршуул шувуу (Sentinel bird) байршуулах арга ашигласан дүнгээс Бид шувууны томуугийн тандах судалгаанд туршуул шувуу байршуулах арга зүйг ашиглах боломжийг судлах зорилгоор урьдчилсан туршилтыг 2019 оны 7-10 сард Булган аймгийн Сайхан сумын Хунт нууранд хийж гүйцэтгэв. Хунт нуур нь олон тооны нүүдлийн усны шувууд зусах болон дайрч өнгөрдөг ач холбогдолтой цэг бөгөөд 2005-2011 онд өндөр хоруу чанартай шувууны томуугийн (HPAI) A/H5N1 дэд хэвшлийн вирус илэрч байсан. Шувуунаас авсан арчдасны зарим дээжийг insulated isothermal PCR (iiPCR)-р шинжлэхэд 39/104 (37,5%), дээж эерэг, бүх дээжийг PCR (qPCR)-р шинжлэхэд 42/104 (40,38%) нь дээж эерэг дүн үзүүлсэн. Харин ийлдсэнд шувууны томуугийн эсрэг бием илрүүлэх ELISA-ийн шинжилгээгээр  35/104 (33,65%) дээжинд  эсрэг бием илэрсэн. Иймд энэ арга зүйг Монгол орны нөхцөлд тохируулан сайжруулж шувууны томуугийн үүсгэгчийг илрүүлэхэд ашиглах нь уг өвчний эпидемиологийн байдлыг танин мэдэхэд чухал ач холбогдолтой  юм. Түлхүүр үг: нугас, вирус, дархлаа, эпидемиологи, тархалт, ПГУ (Полимеразан  гинжин урвал)

scholarly journals Campylobacter jejuni Strains Associated with Wild Birds and Those Causing Human Disease in Six High-Use Recreational Waterways in New Zealand

2019 ◽  
Vol 85 (24) ◽  
Author(s):  
Rima D. Shrestha ◽  
Anne C. Midwinter ◽  
Jonathan C. Marshall ◽  
Julie M. Collins-Emerson ◽  
Eve J. Pleydell ◽  
...  
Keyword(s):  
Public Health ◽  
New Zealand ◽  
Campylobacter Jejuni ◽  
Human Disease ◽  
River Flow ◽  
Human Infection ◽  
Wild Birds ◽  
Recreational Waters ◽  
Content Type ◽  
Sequence Types

ABSTRACT Campylobacter jejuni, a leading cause of gastroenteritis worldwide, has been frequently isolated from recreational rivers and streams in New Zealand, yet the public health significance of this is unknown. This study uses molecular tools to improve our understanding of the epidemiology and sources of Campylobacter in recreational waterways, with a view to preventing human infection. Epidemiological and microbiological data were collected between 2005 and 2009 from six high-use recreational waterways in the Manawatu-Wanganui region of the North Island. Campylobacter spp. and C. jejuni were isolated from 33.2% and 20.4% of 509 samples, respectively. Isolation of Campylobacter was observed in both low and high river flows. After adjusting for the confounding effects of river flow, there was a significantly higher likelihood of isolating Campylobacter in the winter month of June compared to January. A high diversity of C. jejuni multilocus sequence types was seen, with the most commonly isolated being the water rail-associated ST-2381 (19/91 isolates [20.9%]), ST-1225 (8/91 isolates [8.8%]), and ST-45 (6/91 isolates [6.6%]). The ST-2381 was found in all rivers, while the most commonly isolated ST from human cases in New Zealand, the poultry-associated strain ST-474, was isolated only in one river. Although the majority of Campylobacter sequence types identified in river water were strains associated with wild birds that are rarely associated with human disease, poultry and ruminant-associated Campylobacter strains that are found in human infection were also identified and could present a public health risk. IMPORTANCE In 2016, there was a large-scale waterborne outbreak of campylobacteriosis in New Zealand, which was estimated to have affected over 5,000 people. This highlighted the need for a greater understanding of the sources of contamination of both surface and groundwater and risks associated with exposure to both drinking and recreational water. This study reports the prevalence and population structure of Campylobacter jejuni in six recreational waters of the Manawatu-Wanganui region of New Zealand and models the relationship between Campylobacter spp. and ruminant-associated Campylobacter and the parameters “sites,” “months,” and “river flow.” Here, we demonstrate that both low and high river flows, month of the year, and recreational sites could influence the Campylobacter isolation from recreational waters. The presence of genotypes associated with human infection allowed us to describe potential risks associated with recreational waters.

scholarly journals Molecular Epidemiology and Characterization of Campylobacter spp. Isolated from Wild Bird Populations in Northern England

2009 ◽  
Vol 75 (10) ◽  
pp. 3007-3015 ◽  
Author(s):  
Laura A. Hughes ◽  
Malcolm Bennett ◽  
Peter Coffey ◽  
John Elliott ◽  
Trevor R. Jones ◽  
...  
Keyword(s):  
Molecular Epidemiology ◽  
Wild Bird ◽  
Bird Species ◽  
Domestic Animal ◽  
Wild Birds ◽  
Campylobacter Coli ◽  
Coastal Habitat ◽  
Cross Sectional ◽  
Bird Populations

ABSTRACT Campylobacter infections have been reported at prevalences ranging from 2 to 50% in a range of wild bird species, although there have been few studies that have investigated the molecular epidemiology of Campylobacter spp. Consequently, whether wild birds are a source of infection in humans or domestic livestock or are mainly recipients of domestic animal strains and whether separate cycles of infection occur remain unknown. To address these questions, serial cross-sectional surveys of wild bird populations in northern England were carried out over a 2-year period. Fecal samples were collected from 2,084 wild bird individuals and screened for the presence of Campylobacter spp. A total of 56 isolates were recovered from 29 birds sampled at 15 of 167 diverse locales. Campylobacter jejuni, Campylobacter lari, and Campylobacter coli were detected by PCR, and the prevalences of different Campylobacter spp. in different avian families ranged from 0% to 33%. Characterization of 36 C. jejuni isolates by multilocus sequence typing revealed that wild birds carry both livestock-associated and unique strains of C. jejuni. However, the apparent absence of unique wild bird strains of C. jejuni in livestock suggests that the direction of infection is predominantly from livestock to wild birds. C. lari was detected mainly in wild birds sampled in an estuarine or coastal habitat. Fifteen C. lari isolates were analyzed by macrorestriction pulsed-field gel electrophoresis, which revealed genetically diverse populations of C. lari in Eurasian oystercatchers (Haematopus ostralegus) and clonal populations in magpies (Pica pica).

scholarly journals Risk assessment of Avian Influenza and Newcastle disease viruses exposure from peridomestic wild birds in a conservation breeding site in the United Arab Emirates

2021 ◽  
Author(s):  
Julien Hirschinger ◽  
Timothée Vergne ◽  
Tifenn Corre ◽  
Yves Hingrat ◽  
Jean-Luc Guerin ◽  
...  
Keyword(s):  
Avian Influenza ◽  
United Arab Emirates ◽  
Newcastle Disease ◽  
Wild Bird ◽  
Breeding Site ◽  
Wild Birds ◽  
Prevalence Survey ◽  
Breeding Sites ◽  
Bird Populations ◽  
Conservation Breeding

Worldwide, wild birds are frequently suspected to be involved in the occurrence of outbreaks in captive-bred birds although proofs are lacking and most of the dedicated studies are insufficiently conclusive to confirm or characterize the roles of wild birds in such outbreaks. The aim of this study was to assess and compare, for the most prevalent peridomestic wild birds, the different exposure routes for Avian Influenza and Newcastle disease viruses in conservation breeding sites of Houbara bustards in the United Arab Emirates. To do so, we considered all of the potential pathways by which captive bustards could be exposed to Avian Influenza and Newcastle disease viruses by wild birds, and ran a comparative study of the likelihood of exposure via each of the pathways considered. We merged data from an ecological study dedicated to local wild bird communities with an analysis of the contacts between wild birds and captive bustards and with a prevalence survey of AIV and NDV in wild bird populations. We also extracted data from an extensive review of the scientific literature and by the elicitation of expert opinion. Overall, this analysis highlighted that captive bustards had a high risk of being exposed to pathogens by wild birds. This risk was higher for Newcastle disease virus than Avian influenza virus, and House sparrows represented the riskiest species for the transmission of both viruses through indirect exposure from consumption of water contaminated from the faeces of an infectious bird that got inside the aviary. Thus, this analysis reveals that wild peridomestic birds may play a role in the transmission of avian pathogens to captive bred birds. These results also reaffirm the need to implement sanitary measures to limit contacts between wild and captive birds and highlight priority targets for a thoughtful and efficient sanitary management strategy.

Risk factors for the occurrence ofEscherichia colivirulence geneseae,stx1andstx2in wild bird populations

2009 ◽  
Vol 137 (11) ◽  
pp. 1574-1582 ◽  
Author(s):  
L. A. HUGHES ◽  
M. BENNETT ◽  
P. COFFEY ◽  
J. ELLIOTT ◽  
T. R. JONES ◽  
...  
Keyword(s):  
Risk Factors ◽  
Wild Bird ◽  
Wild Birds ◽  
Multivariable Logistic Regression Analysis ◽  
Virulence Determinants ◽  
Human Beings ◽  
Long Distance ◽  
Wild Mammals ◽  
Bird Populations ◽  
Ability To Act

SUMMARYShiga toxin-producingEscherichia coli(STEC) can cause serious disease in human beings. Ruminants are considered to be the main reservoir of human STEC infections. However, STEC have also been isolated from other domestic animals, wild mammals and birds. We describe a cross-sectional study of wild birds in northern England to determine the prevalence ofE. coli-containing genes that encode Shiga toxins (stx1and stx2) and intimin (eae), important virulence determinants of STEC associated with human disease. Multivariable logistic regression analysis identified unique risk factors for the occurrence of each virulence gene in wild bird populations. The results of our study indicate that while wild birds are unlikely to be direct sources of STEC infections, they do represent a potential reservoir of virulence genes. This, coupled with their ability to act as long-distance vectors of STEC, means that wild birds have the potential to influence the spread and evolution of STEC.

scholarly journals Results of scientific expedition to natural biotopes of the Republic of Tyva in 2019 with the purpose of infectious disease monitoring in wild bird populations

2020 ◽  
pp. 83-88
Author(s):  
M. S. Volkov ◽  
V. N. Irza ◽  
A. V. Varkentin ◽  
S. V. Rogolyov ◽  
A. V. Andriyasov
Keyword(s):  
Avian Influenza ◽  
Wild Bird ◽  
Migratory Birds ◽  
Virus Genome ◽  
Wild Birds ◽  
Laboratory Diagnostics ◽  
Active Monitoring ◽  
Bird Populations ◽  
Two Samples ◽  
The Republic

The results of the scientific expedition to Tere Khol and Uvs Nuur Lakes in the Republic of Tyva with the purpose of active monitoring of highly dangerous diseases in wild migratory waterfowl and epidemic analysis of these biotope water areas are presented in the paper. The Uvs Nuur Lake is a kind of an indicator for avian influenza introduction to the Russian Federation, because this is the resting and nesting area for many migratory wild birds during the period of mass migrations from Central and South-East Asian countries. In the process of active monitoring the complete autopsy of bird carcasses with description of organs and systems and sampling for laboratory diagnostics were performed. Droppings (pooled samples), parts of internal organs from dead and shot birds, blood (if possible) served as biological and pathological material for testing. While sampling, species were identified using an ornithological guide. The autopsy of dead waterfowl and birds shot for diagnostic purposes demonstrated a high worm burden of nematodes and cestodes. Two samples from European herring gulls were positive for avian influenza type A virus genome and subtype H13N6 was identified in one of them. Avian paramyxovirus serotype 1 (APMV-1), the agent of Newcastle disease, was found in one sample from gulls. The lakes of the Republic of Tyva are the most significant sites for sampling of biological material from wild birds, as the primary detection of highly pathogenic avian influenza virus in this territory is a serious signal of potential further virus spread and a precursor to a probable epizooty. Notwithstanding the absence of AIV very virulent isolate detections in wild bird populations the middle term prognosis for 2020 can be designated as cautious, as the avian influenza epidemic situation is deteriorating globally, especially in the European countries, and the threat of the virus introduction to the Russian territory with migratory birds still exists.

scholarly journals Antimicrobial Resistance Profiles of Campylobacter jejuni Isolates from Wild Birds in Sweden

2005 ◽  
Vol 71 (5) ◽  
pp. 2438-2441 ◽  
Author(s):  
Jonas Waldenström ◽  
Dik Mevius ◽  
Kees Veldman ◽  
Tina Broman ◽  
Dennis Hasselquist ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Nalidixic Acid ◽  
Campylobacter Jejuni ◽  
Wild Bird ◽  
Wild Birds ◽  
Antimicrobial Substances ◽  
Environmental Reservoir ◽  
Resistant Strains ◽  
Resistant Genotypes

ABSTRACT In order to determine the occurrence and frequency of resistant strains of the bacterium Campylobacter jejuni and to establish baseline MICs in isolates from an environmental reservoir, the resistance profiles of 10 antimicrobial substances were determined for 137 C. jejuni isolates from wild birds in Sweden. Observed MICs were generally low, with only low to moderate incidence of resistance to the tested compounds. One isolate, however, was resistant to nalidixic acid and ciprofloxacin, indicating that quinolone-resistant genotypes of C. jejuni have the potential to spread to wild bird hosts.

scholarly journals Novel Clonal Complexes with an Unknown Animal Reservoir Dominate Campylobacter jejuni Isolates from River Water in New Zealand

2009 ◽  
Vol 75 (19) ◽  
pp. 6038-6046 ◽  
Author(s):  
P. E. Carter ◽  
S. M. McTavish ◽  
H. J. L. Brooks ◽  
D. Campbell ◽  
J. M. Collins-Emerson ◽  
...  
Keyword(s):  
New Zealand ◽  
River Water ◽  
Campylobacter Jejuni ◽  
Wild Bird ◽  
The Novel ◽  
Animal Reservoir ◽  
Catchment Areas ◽  
Three Rivers ◽  
Sequence Types ◽  
Common Sequence

ABSTRACT Campylobacter jejuni is widely distributed in the environment, and river water has been shown to carry high levels of the organism. In this study, 244 C. jejuni isolates from three river catchment areas in New Zealand were characterized using multilocus sequence typing. Forty-nine of the 88 sequence types identified were new. The most common sequence types identified were ST-2381 (30 isolates), ST-45 (25 isolates), and ST-1225 (23 isolates). The majority of the sequence types identified in the river water could be attributed to wild bird fecal contamination. Two novel clonal complexes (CC) were identified, namely, CC ST-2381 (11 sequence types, 46 isolates) and CC ST-3640 (6 sequence types, 12 isolates), in which all of the sequence types were new. CC ST-2381 was the largest complex identified among the isolates and was present in two of the three rivers. None of the sequence types associated with the novel complexes has been identified among human isolates. The ST-2381 complex is not related to complexes associated with cattle, sheep, or poultry. The source of the novel complexes has yet to be identified.

Effectiveness of Programs for the Prevention of Child Sexual Abuse

2020 ◽  
Vol 25 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Amaia Del Campo ◽  
Marisalva Fávero
Keyword(s):  
United States ◽  
Sexual Abuse ◽  
New Zealand ◽  
Critical Analysis ◽  
Prevention Programs ◽  
The United States ◽  
Sexual Abuse Prevention ◽  
Negative Effects ◽  
The United Kingdom ◽  
Methodological Considerations

Abstract. During the last decades, several studies have been conducted on the effectiveness of sexual abuse prevention programs implemented in different countries. In this article, we present a review of 70 studies (1981–2017) evaluating prevention programs, conducted mostly in the United States and Canada, although with a considerable presence also in other countries, such as New Zealand and the United Kingdom. The results of these studies, in general, are very promising and encourage us to continue this type of intervention, almost unanimously confirming its effectiveness. Prevention programs encourage children and adolescents to report the abuse experienced and they may help to reduce the trauma of sexual abuse if there are victims among the participants. We also found that some evaluations have not considered the possible negative effects of this type of programs in the event that they are applied inappropriately. Finally, we present some methodological considerations as critical analysis to this type of evaluations.

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